Comparison

MacroFactor vs Built With Science+

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MacroFactor

This app uses a dynamic algorithm to adapt your calorie and macro targets based on your metabolism and progress. It offers tools for quick food logging, a verified database, and personalized coaching to help you achieve sustainable diet goals without stress or rigidity.

Highlights
  • Dynamic metabolism adaptation
  • Personalized macro and calorie targets
  • Verified food database
  • Barcode scanner
  • Weekly coaching check-ins
  • Micronutrient tracking
  • Weight trend insights
Features
Read full description

MacroFactor combines innovative coaching algorithms with proven nutrition and behavioral science to help you reach your diet goals and achieve empowering, sustainable results. MacroFactor uses a dynamic algorithm to adapt to changes in your metabolism and personalize your macro plan to keep you on track. Download to start your 7-day trial of this premium, ad-free macro tracker app. DIET SMARTER Using a best-in-class expenditure estimate, MacroFactor’s nutrition coach algorithm adapts to changes in your metabolism so you never plateau. • The unique energy expenditure calculation detects changes in your metabolism • Smart algorithms personalize your calorie and macro intake targets, just like a nutrition coach would • Weekly check-ins keep you on track toward your goals The result? You better understand your body’s needs and can successfully reach and sustain your goals without stress. THE BEST MACRO TRACKER TOOLS • The fastest macro tracker on the market with tools like barcode scan and custom foods • Verified food database, so you can trust the accuracy of the foods you log • Custom macro programs and weekly check-ins based on your goals and preferences • Detailed breakdowns of micronutrients, macros, and more • Period tracker, habit tracker, unique data insights and visualization, integrations, dark mode, and more AN EMPOWERING, SUSTAINABLE APPROACH MacroFactor’s robust nutrition coach algorithm will make appropriate adjustments to your calorie and macro targets based on what you log, regardless of how close you came to hitting your targets from the previous week. The algorithms don’t function any worse if you deviate from your macro targets. This means that unlike other nutrition coach apps, you don’t have to eat like a robot or perfectly adhere to your macro targets in order to get your weekly coaching check-in and an appropriate calorie adjustment. You’ll never see warnings, red numbers, or shaming when you go over your calorie or macro targets, unlike in other macro tracker apps. Instead, MacroFactor’s macro tracker and nutrition coach aim to empower you with the guidance and tools you need to reach your goals without stress or rigidity. A CLOSER LOOK AT FEATURES & BENEFITS Nutrition coach • Get a science-backed macro plan designed for your goals and preferences • Set a goal to lose, maintain, or gain weight • Smart nutrition coach AI makes weekly changes to your macro plan to keep you on track Macro tracker • Large verified food database, so you can trust that calorie and macro information is accurate • Barcode scanner • Food tracker for both macros and micronutrients • Features like copy/paste, custom foods, and smart history make food tracking quick and easy • Timeline-style food log doesn’t lock you in to a certain number of meals • Metric and imperial options • Custom foods and recipes Health insights tracker • Best-in-class expenditure estimate • Unique Weight Trend insight that cuts through the noise of daily fluctuations • Habit tracker • Period tracker NOTICES Contains information from Open Food Facts, which is made available here under the Open Database License (ODbL). Open Food Facts: https://openfoodfacts.org/ ODbL: https://opendatacommons.org/licenses/odbl/1-0/ SUBSCRIPTION PRICING & TERMS MacroFactor is a premium app that offers three auto-renewing subscription options: $11.99 / month $47.99 / half year $71.99 / year (equal to $5.99 a month) MacroFactor has a free trial, but does not offer a free subscription tier. These prices are for US customers. Pricing in other countries may vary. Payment will be charged to your Apple account at confirmation of purchase. Your subscription to MacroFactor will automatically renew, unless you cancel at least 24 hours before the current period ends. You can cancel or manage your subscription from your Apple account settings. Terms & Conditions: https://terms.macrofactorapp.com/ Privacy Policy: https://privacy.macrofactorapp.com/

About

Built With Science+

This intelligent fitness companion offers personalized workout plans and nutrition advice based on scientific insights. It adapts to your progress with real-time feedback, providing guidance for continuous gains and informed health decisions.

Highlights
  • Hyper-Personalized Workouts
  • Progressive Overload Guidance
  • Real-Time Diet Adjustments
  • AI-Powered Meal Scanner
  • 250+ Exercise Tutorials
  • Daily Knowledge Boosters
  • AI Fitness & Nutrition Assistant
Features
Read full description

Reach your goals faster with BWS+ all-in-one fitness coach. Frustrated with cookie-cutter workout plans and confusing nutrition advice? BWS+ is your intelligent coach and complete fitness companion for achieving the body you've always wanted. The app integrates insights from leading fitness scientists, coaches, and dietitians, offering personalized advice based on your unique body and goals. It evolves with you, adapting your workouts and nutrition based on real-time feedback, encapsulating decades of experience into a dynamic coach that tailors itself to your needs. The latest science, personalized to you - Hyper-Personalized Workouts: Built with Science's advanced algorithm creates a workout plan specifically for your body, goals, and schedule. Whether you're hitting the gym or training at home, we've got you covered. - Progressive Overload Guidance: Never plateau again. BWS+ tells you exactly how to adjust your weights and reps each session for continuous gains. - Real-Time Diet Adjustments: As your body changes, so do your nutritional needs. Our app adapts your meal plan weekly, ensuring you're always on track. All-in-One Fitness and Nutrition Solution - 250+ In-Depth Exercise Tutorials: Master proper form with our detailed video guides, packed with science-based insights. - AI-Powered Meal Scanner: Say goodbye to tedious calorie counting. Simply snap a photo of your meal, and our AI does the rest, accurately tracking your nutrition in seconds. - Daily Knowledge Boosters: Unlock 200+ bite-sized lessons to build your fitness IQ and make informed decisions about your health. One App is All You Need - AI Fitness & Nutrition Assistant: Get personalized answers to your fitness and nutrition questions, as if you're talking directly to Jeremy Ethier. - Muscle Group Prioritizer: Focus on specific muscles that need extra attention for balanced development. - Recomp Detector: Track simultaneous fat loss and muscle gain with our advanced body composition analysis. - Step Tracking and Daily Activity Goals: Seamlessly integrate with Apple Health and Google Fit to optimize your overall activity levels. We've combined cutting-edge technology with years of scientific research to create an app that delivers real, lasting transformations. No more guesswork, no more wasted time in the gym. BWS+ provides the structure and guidance you need to finally achieve the body you deserve. Download now and take the first step towards the best version of yourself! This app requires an active BuiltWithScience+ membership or an in-app subscription purchased through the App Store to access its features and content. Subscription details and terms are available within the app.

Screenshots

MacroFactor4 screens
Built With Science+4 screens

Verdict

The call

The clearest difference is monetization model: MacroFactor at free with in-app purchases against Built With Science+'s subscription. MacroFactor also leads on chart position (#10 vs unranked) and update cadence (weekly vs every 2 weeks). Built With Science+'s advantage is review sentiment (80% vs 71%). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MacroFactor sells 11 in-app purchases, starting at $9.99 per month and Built With Science+ sells 4 in-app purchases, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for MacroFactor against 4.8 for Built With Science+. That said, the two scores are not equally well evidenced: MacroFactor has 22K ratings behind it against 3.9K, so its average is the more settled of the two. Written reviews are what separate them: 71% of MacroFactor's written reviews are positive against 80% of Built With Science+'s.

UpkeepUpdate frequency

MacroFactor ships an update weekly, Built With Science+ every 2 weeks. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

Scorecard5 real differences · 6 level
MacroFactor versus Built With Science+: the parameters behind the verdict, then further details
ParameterMacroFactorBuilt With Science+
PriceFreeFree
Rating4.8 (22K ratings)4.8 (3.9K ratings)
Positive reviews70.8% of reviews79.8% of reviews — better
Number of ratings22K — better3.9K
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
Best chart rank#10 — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, Apple Watch
Requires iOS15.6 — better16.2
Further details — not scored
Size217 MB233 MB
Age rating9+4+
DeveloperStronger By Science Technologies LLCBuilt With Science Holdings Corp

Customer experience

MacroFactor

All ratings21,724 ratings
Positive96.3%
Neutral1.2%
Negative2.5%
Written reviews1,553 reviews
Positive70.8%
Neutral9.6%
Negative19.6%

Built With Science+

All ratings3,926 ratings
Positive95.6%
Neutral1.9%
Negative2.5%
Written reviews807 reviews
Positive79.8%
Neutral6.2%
Negative14.0%

User reviews

MacroFactor

From 22K App Store ratings

What we love

  • 🚀 Easy to use
  • 🔍 Detailed analytics and data
  • 🤖 Intelligent algorithm adjustments
  • 👍 Flexible and customizable
  • 💯 Comprehensive food database

Room to improve

  • 🔍 Limited food database for some regions
  • 🤔 Steep learning curve for some users
  • 💰 Subscription-based model
  • 🤖 Occasional inaccuracies in AI-generated entries
  • 🔀 Convoluted navigation in some areas

Built With Science+

From 3.9K App Store ratings

What we love

  • 👍 Comprehensive fitness and nutrition tracking
  • 🚀 Convenient all-in-one app
  • 📚 Helpful educational lessons
  • 💪 Science-backed program
  • 🎯 Customized and adaptive workouts

Room to improve

  • 🐛 Occasional performance issues and bugs
  • 🔍 Limited food database and recipe options
  • 📱 Lack of integration with other fitness apps and devices
  • 🕰️ Inflexible workout scheduling
  • 💬 Limited human interaction and coaching support

Bugs and requests

MacroFactor

Reported bugs

2 issues
  • Disappearing food entries
  • Inconsistent syncing with Apple Health

Requested features

5 requests
  • Apple Watch integration
  • Micronutrient tracking
  • Ability to edit database entries
  • Improved barcode scanning for international users
  • Customizable dashboard and widgets

Built With Science+

Reported bugs

4 issues
  • Workout data sometimes gets lost or marked incomplete
  • App takes a long time to open
  • Login and sign-up issues for existing customers
  • Inconsistent exercise recommendations and adjustments

Requested features

5 requests
  • Add ability to create and save custom recipes
  • Integrate with Apple Health and other fitness platforms
  • Provide more flexibility in workout scheduling
  • Enhance human coaching and support features
  • Improve performance and stability

In-app purchases

11 purchases

MacroFactor

Subscriptions11
  • Monthly Subscription14 Days trial$9.991 Month
  • Monthly Subscription7 Days trial$11.991 Month
  • Monthly Subscription$11.991 Month
Show 8 more
  • Monthly Subscription14 Days trial$11.991 Month
  • Semiannual Subscription7 Days trial$47.996 Months
  • Semiannual Subscription14 Days trial$47.996 Months
  • Annual Subscription14 Days trial$59.991 Year
  • Annual Subscription7 Days trial$59.991 Year
  • Annual Subscription7 Days trial$71.991 Year
  • Annual Subscription14 Days trial$71.991 Year
  • Annual Subscription Bundle$89.991 Year
4 purchases

Built With Science+

Subscriptions2
  • Monthly Membership14 Days trial$29.991 Month
  • Annual Membership14 Days trial$189.001 Year
One-time2
  • Intermediate Program Unlock$49.00
  • Beginner Program Unlock$49.00

Questions

Is MacroFactor free?
MacroFactor is free to download, with in-app purchases available.
Is Built With Science+ free?
Built With Science+ is free to download, with in-app purchases available.
Which has better reviews, MacroFactor or Built With Science+?
MacroFactor and Built With Science+ are both rated 4.8 out of 5 on the App Store, from 22K and 3.9K ratings respectively.
Do MacroFactor or Built With Science+ have ads?
Neither MacroFactor nor Built With Science+ shows ads.
Which is updated more often, MacroFactor or Built With Science+?
MacroFactor ships an update weekly, and Built With Science+ every 2 weeks. Most recently, MacroFactor was updated on September 24, 2026 and Built With Science+ on September 23, 2026.

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